Attachment of watch-pendants



(Modem 0. K. COLBY. Attachment of Watch Pendants.

Patented April 5,188I.

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INVENTURI glow/le 6 mm 0 rLPETERs, PNOTO-LITHQGRAPHER, WASHKNGTON, D\C

UNITED STATES PATENT OFFICE.

CALEB K. COLBY, OF BROOKLYN, NE'W YORK.

ATTACHMENT OF WATCH-PENDANTS.

SPECIFICATION forming part of Letters Patent No. 239,732, dated April 5, 1881.

Application filed December 6, 1880.

To all whom it may concern:

Be it known that I, CALEB K. COLBY, a citizen of the United States, residing in Brooklyn, Kings county, New York, have invented certain Improvements in Watches, of which the following is a specification.

This invention relates to improvements in what are known as stem-winding as distinguishedfrom key-winding watches, the object being to cheapen the construction without detractin g from the convenience or the dust-proof character of the watch, and to provide a stem, with the necessary winding appliances, that is entirely independent of both the case and the movement-that is to say, the stem is not directly connected with either the case or the movement, and may be applied to another case and another movement in a few moments, or as readily as the movement can be taken out of an ordinary case.

In the drawings, which serve to illustrate my invention, Figure 1 is a transverse mid-section taken through the case of a watch embodying my improvements, the view being on a larger scale. Fig. 2 is a plan or face view of the movement resting in the ring to which the stem is attached. Fig. 3 is a side or edge view of Fig. 2. Fig. 4 is a plan of the case detached, the bezel bearing the crystal shown as overlapping the case proper. Fig. 5 is a transverse mid-section of the case detached, showing the parts separated.

A represents a watch-movement which consists of the two movement-plates bearing the works or gearing, the dials, and the hands.

B is the case which incloses the movement. This case may be made of any form or material, and consists of the main portion, lettered b, which is in the form of a cup with an open top, its sides and back being in one piece, and the bezel 0, which holds the crystal. The bezel is sprung upon the body in a well-known way. The main part or body of the case has a notch or recess, d, formed in one side to receive the stem or pendant when the parts are put together, as in Fig. 1. My case is adapted to be made wholly of celluloid or other similar non-metallic material, as the pendant, which is always of metal, is not attached to the case.

C is the stem or pendant, which is attached rigidly to an open band or ring, a, adapted to fit and receive the movement. The stem (Model) contains the ordinary spindle or mechanism for winding, the same being operated by means of the usual knob or ball, g. This mechanism being well known, and forming no part of my presentinvention, I have not thought it necessary to illustrate it more fully.

To prevent the dust from entering the case around the stem, I employ a self-adjusting rose or flange, a, forming part of a sleeve, f, which surrounds the neck of the stem. The flange is kept pressed up to the case by means of a spring arranged inside the sleeve j, which spring abuts against a shoulder on the stem.

It will be observed that my watch comprises three principal parts, wholly detached or detachable from each other, and adapted to be manufactured and sold separately. These are the case, the movement, and the stem with its attached band or ring a. Movements adapted for stem-winding are manufactured by the various watch companies to standard sizes; and the rings a may be manufactured to fit the diiferent sizes of movements, and the stems be attached thereto. It will then only be necessary to set the movement in the ring, secure it by a screw in the way usually employed in fixing the movement, and the watch is ready to case.

The ring a having a bearing all around the movement-plates, it will be obvious that it may be handled by the pendant without danger of springing the plates or putting the delicate machinery of the movement out of adjustment; and it is a simple and cheap way of attaching the stem to the movement as well as the safest. The two parts of the case being sprung together instead of onto the movement or the ring a, the strain and jar produced in applying and removing the case can have no injurious effect on mechanism of the watch.

I am aware that cases provided with a wind ing stem or pendant have had a ring to receive the movement hinged thereto and I am also aware that movements have had windingpendants secured to the movement-plates by screws and inclosing-cases sprung onto said movements. These, however, difl'er essentially from my invention in both construction and purpose.

I claim- 1. An open band, a, constructed to embrace and hold a watch-movement and to fit into an inclosing-case, and providedwith a windingstem O, rigidly secured thereto, substantially as and for the purposes set forth.

2. The combination of a watch-case composed of two parts, one arranged to be sprung onto the other, the major partb havingarecess, d, for the stem, and an open band or ring, a, to receive the movement and to fit into the case, said hand having a winding stem or pendant fixed thereto, substantially as and for the purposes set forth.

3. The comhination,to form a Watch, of a case composed of two parts, one arranged to be sprung onto the other, the major part Z) havwitnesses.

CALEB K. COLBY. Witnesses:

ARTHUR G. FRASER, HENRY OONNETT. 

